Simple java swing application to view PDF file using java PDF Renderer library:

public class Main {

          public static void setup() throws IOException {

         

                PagePanel panel = new PagePanel();

                this.add(panel);

                this.pack();

                this.setVisible(true);

                //load a pdf from a byte buffer

                Path currentRelativePath = Paths.get("");

                String s = currentRelativePath.toAbsolutePath().toString();

                File file = new File(s+"/pdf/test.pdf");

                RandomAccessFile raf = new RandomAccessFile(file, "r");

                FileChannel channel = raf.getChannel();

                ByteBuffer buf = channel.map(FileChannel.MapMode.READ_ONLY, 0, channel.size());

                PDFFile pdffile = new PDFFile(buf);

                // show the first page

                PDFPage page = pdffile.getPage(0);

                panel.showPage(page);

}

public staic void main(String args[]){

SwingUtilities.invokeLater(new Runnable() {

public void run() {

try {

Main.setup();

} catch (IOException ex) {

ex.printStackTrace();

}

}

});

}

}